Conventional Deadlift

You jerk the bar off the floor instead of squeezing the slack out first, which yanks your back out of position.

You start with the hips too low and squat the weight, or too high and stiff-leg it.

You let the bar swing away from the shins so the weight pulls you forward.

You hitch or lean way back at lockout instead of just standing tall.

Wedge yourself into the bar: chest up, lats tight, back flat before anything leaves the floor.

Think of the pull as a leg press against the floor, not a lift with the arms and back.

Keep the bar in contact with your legs the entire way up and down.